IJSTE - International Journal of Science Technology & Engineering | Volume 3 | Issue 09 | March 2017 ISSN (online): 2349-784X
Review Analysis on Seismic Performance of Flat Slab Structures with Slender Column Sushil S Karande M.E. Student Department of Civil Engineering ICOER, Wagholi, Pune
Prof. S. R. Suryawanshi Assistant Professor Department of Civil Engineering ICOER, Wagholi, Pune
Abstract In construction-industry, Flat slab buildings are take more preference than conventional buildings. Flat slab structures provide more advantages such as large spans, plain ceiling, and low shuttering cost and less construction time, increases building height etc. It is important to study the response of flat slab structures under seismic loading. While designing the flat slab structures with slender column, response under seismic loading for different zones is very important.This paper deals with study on literature review of different-authors on behavior of flat slab structures under seismic loading for better understanding of flat slab structures and concept of slender column. This study provides good data on the parameters like storey shear, lateral displacement, time-period, slenderness ratio, storey drift, etc. Keywords: ETABS, Flat Slab Structures, Slender Column, Seismic Loading ________________________________________________________________________________________________________ I.
INTRODUCTION
A Flat-slab is slab casted monolithically on supporting columns in absence of beam. Due to absence of beam, plain ceiling is obtained. The principal feature of the flat slab floor is uniform thickness with a flat ceiling which requires plain formwork and construction is very easy. Flat-slab systems provide economic solution for high-rise construction. Due to less floor height, overall height of building is very less indirectly effect on loading of structure leads to reduction in foundation cost. The ratio of unsupported length to smaller dimension is less than 10, column is known as slender column (sometimes referred it as a long column). Slender column is developed in multistoried high-rise structures due to increasing ground floor or parking floor height for its functional use or architectural use. On the other hand, the modern trend is towards taller and slender structures. In a structure, long column has less load caring capacity as c0mpared to sh0rt c0lumn which p0ssess similar secti0nal area. Hence due to this effect the long-column carries very small l0ad as c0mpared t0 the sh0rt c0lumn. Flat-slab structures have been damaged highly, because these structure are analyzed and designed as per IS code. Hence it is required to evaluate actual performance of flat plate structure subjected to seismic loading. II. LITERATURE REVIEW 1) Mohammad Hossain, Tahsin Hossain work on FEM Apprach to Perform Parametric Study on Slender Columns for FlatPlate Structures 2) They find in their work the effect of column on flat slab structure. With the help of ETAB software work is done to know the different aspects of flat plate structures. The different parameters were used by them such as Height of column, crosssection of column with various panel sizes f0r different load. Fr0m their result it has been seen that c0lumn was m0re sensitive f0r slenderness effect in flat plate structure. Slenderness effect is observed in corner as well as edge column as compare to inner columns. 3) Micallef K, Sagaseta J, M, Muttoni A. studied on Punching of flat slabs supported on rectangular columns 4) Research carried on shear failure due to punching action in RCC flat slab under sudden loading. They had studied the mighty Experience of slab f0r various parameters like with transverse reinforcement and with0ut transverse reinf0rcement in it. In this research work they has submitted their experimental w0rk 0n flat-slab for exploration of punching shear in flat slab subjected to sudden loadings. They have presented stiffness and resp0nse of slab during experiments. Fr0m their conclusion it has been observe that stiffness is growing due to variation in dimensions of slab. 5) Patil P. S. worked on Study On Slender Column For Flat Plate Structures 6) They studied on slenderness ratio of flat slab structure. They conclude that, Design load increases about 30 percent of critical buckling load for all panels. The buckling load decreases by 27.5 percent along with increase in additional moments by 25 percent, when slenderness ratio increases about 14.91 percent, thus in flat plate structure, corner and edge columns are more sensitive to slender effect than that of inner columns. A corner column for all case needs more attention than edge and inner column. 7) R. P. Apostolska, N. Mircic in 2015 contribute study on Seismic Performance Of Flat-Slab Building Structural Systems
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